HEAT CONDUCTIVE COMPOSITE MATERIAL SHEET AND FABRICATION METHOD THEREOF

摘要

The present invention discloses a thermally conductive composite sheet, including a first aluminum alloy layer, at least one graphite sheet, an aluminum alloy frame, and a second aluminum alloy layer, where the aluminum alloy frame is provided with at least one opening; the graphite sheet is positioned inside the opening of the aluminum alloy frame; the aluminum alloy frame and the graphite sheet are sandwiched between the first aluminum alloy layer and the second aluminum alloy layer; the first aluminum alloy layer is diffusion-bonded to the graphite sheet and the aluminum alloy frame; the second aluminum alloy layer is diffusion-bonded to the graphite sheet and the aluminum alloy frame; and the graphite sheet is cladded by the first aluminum alloy layer, the second aluminum alloy layer, and the aluminum alloy frame, to form a unity. The present invention further provides a method for making the thermally conductive composite sheet. According to the thermally conductive composite sheet and the method for making same that are provided in the present invention, an aluminum alloy and graphite that are highly thermally conductive can be bonded, and production costs are relatively low.